T-306 Keystone RD over Lehigh River
Poor Condition70 years old60 vehicles/day
Location
| State | Pennsylvania |
| County | Lackawanna |
| Location | Clifton 0.2 Mi NW SR 435 |
| Carries | T-306 Keystone RD |
| Crosses | Lehigh River |
| Coordinates | 41.23647, -75.50252 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 1 (Imminent Failure) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 73.2 ft (22.3 m) |
| Max Span | 71.9 ft (21.9 m) |
| Deck Width | 20.3 ft (6.2 m) |
| Deck Area | 138.3 sq m |
| Main Spans | 1 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 60 (2019) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000020855 |